Joist hanger



W. L. CALDWELL JOIST HANGER.

APPLICATION FILED APELS. 1920.

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W. L. CALDWELL.

JOIST HANGER.

APPLICATION FILED APR. 3. I920- 2 92 IT 4H 14 1D R m E 1 Eu 8 1 d2 w m nm m D1 UNITED STATES PATENT OFFICE.

WILLIAJW L. CALDWELL, OLE CANTON, OHiIO, ASSIGNOR, BY MESNE ASSIGNMENTS,TO UNITED ALLOY STEEL GORPOTR-A'llfON', OF CANTON, OHIO, A CORPORATIONOF NEW YORK.

JOIST HANGER.

Specification of Letters Patent.

Patented Feb. 14, 1922.

Application filed April 3, 1920. Serial No. 370,947.

To all whom it may concern Be it known that I, YVILLIAM L. CALD- wnLL, acitizen of the United States, residing at Canton, in the county of Starkand State of Ohio, have invented certain new and useful Improvements inJoist Hangers, of which the following is a specification.

The invention relates to joist hangers made of a single strip of sheetmetal and the object of the improvement is to form a hanger" from astraight strip or blank, with beam hooks extending normally across thebeam, without straining or stretching the metal in the formation of thehanger.

The improvement is illustrated in the accompanying drawings forming parthereof in which- Figure 1 is a perspective view of a hanger embodyingthe invention, fragmentary portions of a beam and a joist being shown indotted lines;

Fig. 2, a plan View of the straight strip of sheet metal from which thehanger is formed, the dotted lines indicating the lines of bending;

Fig. 3, a front elevation of the hanger;

Fig. 4, a section on the line l-t, Fig. 3;

Fig. 5, a side elevation of the hanger;

Fig. 6, a plan view thereof; and

Fig. 7, a sectional view on an enlarged scale of the upper portion ofone of the uprights and the beam hook, showing the means of attachingthe hanger to a beam.

Similar numerals refer to similar parts throughout the drawings.

The hanger is made from a single straight strip 1 of. sheet metal asshown in Fig. 2, and the same is cut to the desired length and width,and is bent upon the dotted lines as shown; first upward upon the lines2 to form the joist seat 3, thence inward upon the lines 4: to formtriangular flanges 5 and 6, thence rearward upon the lines 7 to form thebeam plates 8, and thence downward upon the lines 9 to form the beamhooks 10.

The lines 2 extend at right angles across the strip eqni-distant fromthe middle tl'iereof, and the portion 3 between said lines forms arectangular seat for the joist; this seat being of substantially thesame width as the thickness of the joist, and may have a centralaperture 11 through which a nail or other fastening means may be driveninto the bottom of the joist.

The lines a extend obliquely along and across the strip in oppositedirections, intersecting the lines 2 at the edge 12 of the strip formingthe forward edge of the joist seat, and intersecting the lines 7 whichare parallel with the lines 2, at the o posite edge 13 of the strip;thus forming he like triangular flanges 5 and 6 comprising the uprightmembers of the hanger when the same is bent along the several lines asdescribed.

The bends are made to bring the inner free edges 12 of the uprightflanges 6 into parallel position alongside the joist, and the free edges13 of the upright flanges 5 against the face of the beam; in whichrelation of the parts the rearward bend upon the lines 7 extends thebeam plates 8 across the top of the beam at right angles to the facethereof, and the downward bends along the lines 9 form the hooks 10engaging the farther side of the beam.

Central apertures 14 may be provided in the beam plates through whichnails or like securing means may be driven into the top of the beam; ordepressions 15 may be provided in the upper ends of the triangularflanges 6, in which depressions the apertures 16 may be provided throughwhich nails or the like may be driven into the side of the beam.

The hanger thus formed presents a neat and finished appearance with thefree edges of its upright flanges respectively abutting the sides of thejoists and the beam; and the load is carried by the angle strips formedby the upright triangles 5 and 6 without any torsional strains at anypoint, and with the load evenly distributed throughout all portions ofthe upright members.

I claim:

A sheet metal hanger for carrying a joist from a beam or the like, madeof straight strip bent upward along two parallel lines to form arectangular seat for the joist, the two upwardly bent portions beingthen each bent inwardly upon a line diagonal of the

